I need advice

So I just started a relationship with someone it's been about 3 months since we started dating but about 7 months since we've known each other. Anyway, about 2 weeks ago I had the biggest pregnancy scare even though I knew there was a really low chance of me becoming pregnant it still stressed me out when my period was late but finally it came. The problem is since that pregnancy scare I am terrified to even see my boyfriend and especially to have sex because I literally never even want kids so just the thought of having sex again and the possibility of pregnancy makes me never want to have sex again but I know this is also not fair to him. I have been exploring birth control options and even with one in mind, I can't say that it would ease my worry of getting pregnant because nothing is 100% but abstinence. I just don't know what to do because this is negatively impacting my relationship but my fear of getting pregnant is so strong that I'm almost fine with never having sex again.